Site ID: 2203 Lat. 16.9368 Philippines Cagayan Valley
River: Magat Long. 121.6054
Site name: Cabatuen Contributing area: 4918 km2 Ratio to Comparison Station: 0.17
Latest measurement: 13-Jul-10 Mean annual runoff: 1037 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 490.1 mm
Latest M/C ratio: 1.69 Seven day total: 33.3 mm
Estimated current discharge: 284 m3/sec Percent of mean 7-day total: 113.4 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 315 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 315 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Boluo (2186950)           Contributing Area:   sq mi 28239 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Final calibration to discharge has not yet been accomplished.
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
Annual  Monthly Total Runoff (mm), computed from above satellite-based discharge data
Runoff
(mm) Jan Feb Mar April May June July Aug Sept Oct Nov Dec
472 2002 no data no data no data no data no data no data no data 70.9 50.6 73.2 116.7 160.4
1070 2003 90.5 52.0 66.6 68.4 62.7 103.8 143.4 88.2 63.8 76.3 96.3 158.4
1102 2004 97.6 54.2 68.7 67.6 75.7 136.0 119.5 65.4 67.8 81.9 118.7 149.1
1104 2005 100.3 51.5 71.7 70.5 66.7 114.0 146.6 66.8 58.3 75.1 133.9 148.8
831 2006 99.4 54.4 67.3 77.5 121.2 124.7 80.1 61.6 72.3 72.1 0.0 0.0
1040 2007 85.4 53.2 67.7 61.2 77.2 131.5 122.0 57.2 59.2 77.0 102.7 145.6
1038 2008 91.6 53.9 65.2 61.9 93.7 134.7 94.8 56.0 62.4 66.7 103.9 153.3
1071 2009 97.4 54.9 61.8 69.9 84.4 110.2 125.3 71.6 64.5 74.5 102.5 153.6
490 2010 87.8 50.1 67.0 62.9 63.8 88.0 70.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 1037 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  -73
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Green line records upwelling microwave emission from within 5 km radius of a calbration land target. 
Explanation:   Blue line is emission from within 5 km radius of the measurement target centered over the river.
Brown line is their ratio (M/C; "HR" in Brakenridge et al 2007; scale on right) and is used to estimate river discharge via a rating equation.
Rating equations are being developed and applied on an individual basis using available ground-based discharge information.
GoogleEarth View of Measurement Site
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 261
23-Jul-02 261
24-Jul-02 263
25-Jul-02 259
26-Jul-02 255
27-Jul-02 248
28-Jul-02 246
29-Jul-02 242
30-Jul-02 249
31-Jul-02 252
1-Aug-02 252
2-Aug-02 263
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 184
11-Aug-02 184
12-Aug-02 183
13-Aug-02 187
14-Aug-02 183
15-Aug-02 179
16-Aug-02 177
17-Aug-02 174
18-Aug-02 169
19-Aug-02 165
20-Aug-02 161
21-Aug-02 154
22-Aug-02 154
23-Aug-02 150
24-Aug-02 155
25-Aug-02 158
26-Aug-02 153
27-Aug-02 156
28-Aug-02 132
29-Aug-02 120
30-Aug-02 121
31-Aug-02 123
1-Sep-02 138
2-Sep-02 131
3-Sep-02 128
4-Sep-02 129
5-Sep-02 121
6-Sep-02 120
7-Sep-02 120
8-Sep-02 113
9-Sep-02 117
10-Sep-02 120
11-Sep-02 119
12-Sep-02 119
13-Sep-02 117
14-Sep-02 118
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 130
23-Sep-02 130
24-Sep-02 131
25-Sep-02 133
26-Sep-02 130
27-Sep-02 129
28-Sep-02 129
29-Sep-02 130
30-Sep-02 127
1-Oct-02 126
2-Oct-02 118
3-Oct-02 118
4-Oct-02 114
5-Oct-02 112
6-Oct-02 120
7-Oct-02 116
8-Oct-02 137
9-Oct-02 137
10-Oct-02 146
11-Oct-02 147
12-Oct-02 141
13-Oct-02 140
14-Oct-02 138
15-Oct-02 127
16-Oct-02 128
17-Oct-02 131
18-Oct-02 133
19-Oct-02 142
20-Oct-02 137
21-Oct-02 134
22-Oct-02 133
23-Oct-02 128
24-Oct-02 132
25-Oct-02 132
26-Oct-02 136
27-Oct-02 137
28-Oct-02 157
29-Oct-02 153
30-Oct-02 155
31-Oct-02 161
1-Nov-02 154
2-Nov-02 157
3-Nov-02 141
4-Nov-02 143
5-Nov-02 160
6-Nov-02 161
7-Nov-02 188
8-Nov-02 200
9-Nov-02 185
10-Nov-02 185
11-Nov-02 188
12-Nov-02 191
13-Nov-02 198
14-Nov-02 204
15-Nov-02 207
16-Nov-02 234
17-Nov-02 241
18-Nov-02 252
19-Nov-02 249
20-Nov-02 258
21-Nov-02 264
22-Nov-02 270
23-Nov-02 283
24-Nov-02 284
25-Nov-02 280
26-Nov-02 280
27-Nov-02 255
28-Nov-02 265
29-Nov-02 274
30-Nov-02 288
1-Dec-02 301
2-Dec-02 304
3-Dec-02 308
4-Dec-02 314
5-Dec-02 304
6-Dec-02 300
7-Dec-02 306
8-Dec-02 296
9-Dec-02 309
10-Dec-02 319
11-Dec-02 308
12-Dec-02 308
13-Dec-02 292
14-Dec-02 300
15-Dec-02 289
16-Dec-02 297
17-Dec-02 305
18-Dec-02 304
19-Dec-02 311
20-Dec-02 308
21-Dec-02 293
22-Dec-02 282
23-Dec-02 293
24-Dec-02 290
25-Dec-02 298
26-Dec-02 303
27-Dec-02 281
28-Dec-02 281
29-Dec-02 255
30-Dec-02 254
31-Dec-02 218
1-Jan-03 218
2-Jan-03 220
3-Jan-03 222
4-Jan-03 262
5-Jan-03 226
6-Jan-03 225
7-Jan-03 199
8-Jan-03 203
9-Jan-03 210
10-Jan-03 199
11-Jan-03 204
12-Jan-03 188
13-Jan-03 188
14-Jan-03 184
15-Jan-03 171
16-Jan-03 164
17-Jan-03 154
18-Jan-03 141
19-Jan-03 134
20-Jan-03 132
21-Jan-03 133
22-Jan-03 129
23-Jan-03 126
24-Jan-03 121
25-Jan-03 117
26-Jan-03 116
27-Jan-03 111
28-Jan-03 114
29-Jan-03 114
30-Jan-03 117
31-Jan-03 110
1-Feb-03 115
2-Feb-03 111
3-Feb-03 108
4-Feb-03 110
5-Feb-03 102
6-Feb-03 104
7-Feb-03 104
8-Feb-03 118
9-Feb-03 113
10-Feb-03 117
11-Feb-03 106
12-Feb-03 102
13-Feb-03 102
14-Feb-03 102
15-Feb-03 102
16-Feb-03 102
17-Feb-03 102
18-Feb-03 102
19-Feb-03 102
20-Feb-03 102
21-Feb-03 102
22-Feb-03 102
23-Feb-03 102
24-Feb-03 102
25-Feb-03 103
26-Feb-03 103
27-Feb-03 109
28-Feb-03 106
1-Mar-03 111
2-Mar-03 111
3-Mar-03 118
4-Mar-03 117
5-Mar-03 107
6-Mar-03 112
7-Mar-03 109
8-Mar-03 113
9-Mar-03 127
10-Mar-03 122
11-Mar-03 121
12-Mar-03 111
13-Mar-03 110
14-Mar-03 107
15-Mar-03 107
16-Mar-03 110
17-Mar-03 130
18-Mar-03 130
19-Mar-03 143
20-Mar-03 141
21-Mar-03 139
22-Mar-03 133
23-Mar-03 130
24-Mar-03 122
25-Mar-03 122
26-Mar-03 125
27-Mar-03 124
28-Mar-03 131
29-Mar-03 131
30-Mar-03 132
31-Mar-03 141
1-Apr-03 141
2-Apr-03 148